March 2020 - ntg-context - NTG Mailing Lists

Exercise file with statements and correction
by Fabrice Couvreur 17 Mar '20

17 Mar '20

Hello, I would like to make files with statements of exercises and correction where it would be enough to click on "correction" to access the correction at the end of the file. I'm running out of time, does anyone have a model to share ? Thank you so much. Fabrice

3 6

Issue with rendering arrows in lmtx
by Jan-Erik Hägglöf 17 Mar '20

17 Mar '20

Hi All! When I invoke this command \startMPcode picture p ; p := lmt_svg [ filename ="pil.svg" ]; draw p; \stopMPcode I get weird results, the arrowhead points in wrong direction and is very tiny compared to the size it was meant to have. Here is the .svg code from the saved file (pil.svg) made in Inkscape 0.92 for Mac OS <?xml version="1.0" encoding="UTF-8" standalone="no"?> <svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" inkscape:version="1.0beta2 (2b71d25, 2019-12-03)" id="svg8" version="1.1" viewBox="0 0 462.85062 100.67344" height="100.67344mm" width="462.85062mm" sodipodi:docname="pil.svg"> <defs id="defs2"> <marker inkscape:stockid="Arrow2Lend" orient="auto" refY="0" refX="0" id="Arrow2Lend" style="overflow:visible" inkscape:isstock="true"> <path id="path853" style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" transform="matrix(-1.1,0,0,-1.1,-1.1,0)" inkscape:connector-curvature="0" /> </marker> <marker inkscape:stockid="Arrow1Send" orient="auto" refY="0" refX="0" id="Arrow1Send" style="overflow:visible" inkscape:isstock="true"> <path id="path847" d="M 0,0 5,-5 -12.5,0 5,5 Z" style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1" transform="matrix(-0.2,0,0,-0.2,-1.2,0)" inkscape:connector-curvature="0" /> </marker> <marker inkscape:stockid="Arrow1Mstart" orient="auto" refY="0" refX="0" id="Arrow1Mstart" style="overflow:visible" inkscape:isstock="true"> <path id="path838" d="M 0,0 5,-5 -12.5,0 5,5 Z" style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1" transform="matrix(0.4,0,0,0.4,4,0)" inkscape:connector-curvature="0" /> </marker> </defs> <sodipodi:namedview showgrid="false" inkscape:document-rotation="0" inkscape:current-layer="layer1" inkscape:document-units="px" inkscape:cy="-33.787703" inkscape:cx="722.89047" inkscape:zoom="0.35" inkscape:pageshadow="2" inkscape:pageopacity="0.0" borderopacity="1.0" bordercolor="#666666" pagecolor="#ffffff" id="base" inkscape:window-width="1440" inkscape:window-height="804" inkscape:window-x="0" inkscape:window-y="23" inkscape:window-maximized="0" /> <metadata id="metadata5"> <rdf:RDF> <cc:Work rdf:about=""> <dc:format>image/svg+xml</dc:format> <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" /> <dc:title></dc:title> </cc:Work> </rdf:RDF> </metadata> <g id="layer1" inkscape:groupmode="layer" inkscape:label="Lager 1" transform="translate(141.37191,110.50081)"> <path style="fill:#000000;fill-opacity:1;stroke:#000000;stroke-width:3.565;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#Arrow2Lend)" d="m -141.36309,-96.761905 458.10714,2.267858" id="path830" inkscape:connector-curvature="0" /> </g> </svg> Is there som incompatibility issues with reading those files? I’ve tested to open the file in SVGMaker and it renders correct there. Regards Janne

3 3

Quizz
by Fabrice Couvreur 17 Mar '20

17 Mar '20

Hi, With the Coronavirus pandemic, my school will close like all the others. We chose to work with Microsoft Teams. I know how to file Math exercises written with ConteXt and export to pdf format. Is it possible with ConteXt to create interactive Quizz? Thank you Fabrice

5 9

Can I share METAPOST vardefs over multiple pages?
by Gerben Wierda 16 Mar '20

16 Mar '20

Suppose I have this code: \startMPpage vardef MyShape(expr w, h) = save pth; path pth ; save pic; picture pic; pth = fullsquare xysized (w, h); pic := image ( draw pth; % all kind of stuff here ); setbounds pic to pth; pic enddef ; picture s ; s := MyShape(4cm, 2cm); draw s; drawdot center leftboundary s withpen pencircle scaled 2 withcolor green; drawdot center rightboundary s withpen pencircle scaled 2 withcolor blue; drawdot point .25 along topboundary s withpen pencircle scaled 2 withcolor yellow; drawdot .25[llcorner s, lrcorner s] withpen pencircle scaled 2 withcolor magenta; drawdot origin withpen pencircle scaled 2 withcolor red; \stopMPpage Can I reuse that varied across follow-up MPPages? G

4 7

(bug?) wrong interline in \placelist[alternative=d] with Pagella italics
by Pablo Rodriguez 16 Mar '20

16 Mar '20

Hi Hans, here you have the sample: \setuppapersize[A6] \setupinteraction[state=start] \enabledirectives[references.border] \setupbodyfont[pagella] \starttext \placelist[section] [alternative=d, style=\it] \section{Section 1} \section{\dorecurse{25}{Section }3} \section{Section 3} \stoptext For some strange reason (at least, to me), \placelist[alternative=d] seems to misbehave when using \it or \bi as style. Everthing is fine when italic fonts aren’t used. I’m afraid I may be hitting a bug in both latest MkXL from 2020.03.10 14:52 and MkIV from 2019.07.24 11:31. Many thanks for your help, Pablo -- http://www.ousia.tk

4 9

METAPOST vardef returning multiple and non-numeric types as a single answer?
by Gerben Wierda 16 Mar '20

16 Mar '20

I would like a vardef macro to return the pair of a picture and a bounding box. I don't want to use the setbound operator, because as soon as I do that, I cannot access the components of the picture anymore with pathpart. I found metapost vardef returning multiple values <https://tex.stackexchange.com/questions/448740/metapost-vardef-returning-mu…> on StackExchange but that is about returning multiple values of the same numeric type. Is it possible to have vardef return a set of (picture, path) or (picture, picture) in some way? If not, I need to make two vardef macros for each result type. I tried many things, amongst which: vardef Foo( expr w, h) % define pic pic end group,begingroup % define pic pic endif picture foo[]; foo = Foo( 2, 4);

3 7

Can is somehow inspect the intermediate results of an mtxrun?
by Gerben Wierda 16 Mar '20

16 Mar '20

I have an mtxrun on a .tex file that has problems I need to debug. The .tex file handles well, but whenMETAPOST has a go, it crashes. But after the run, I cannot inspect what source was fed to METAPOST. Can I inspect that (outside of what the log tells me)? In this case, I know METAPOST is fed: picture pic; x:=80.000; y:=200.000; w:=133.000; h:=53.000;pic := ApplicationComponentLogo( w, h, typeString) shifted (x, -y); draw pic; but the log says this is wrong: metapost log > >> unknown picture pic metapost log > >> ApplicationComponentLogo metapost log > ! Equation cannot be performed (unknown picture=numeric). metapost log > <to be read again> metapost log > ( metapost log > <*> ... h:=53.000;pic := ApplicationComponentLogo( metapost log > w, h, typeString) shifted... SoI need to inspect what is fed to METAPOST to see why METAPOST thinks pic or ApplicationComponentLogo have not been defined. G

2 1

Why do I see the outline of the green box in this METAPOST code?
by Gerben Wierda 16 Mar '20

16 Mar '20

Code: vardef Foo(expr w, h, lh) = save pth; path pth; save pthtwo; path pthtwo; save pththree; path pththree; save pic; picture pic; pth = fullsquare xysized (w, h); pthtwo = fullsquare xysized (2*lh, lh) shifted (-w/2, 2.5*lh); pththree = fullsquare xysized (2*lh, lh) shifted (-w/2, lh); fill pth withcolor green; fill pthtwo withcolor yellow; fill pththree withcolor yellow; pic := image ( draw pth; draw pthtwo; draw pththree; ); % setbounds pic to pth; pic enddef ; Call: \startMPpage picture s ; s := Foo(8cm, 2cm, 0.25cm); draw s; drawdot center leftboundary s withpen pencircle scaled 2 withcolor green; drawdot center rightboundary s withpen pencircle scaled 2 withcolor blue; drawdot point .25 along topboundary s withpen pencircle scaled 2 withcolor yellow; drawdot .25[llcorner s, lrcorner s] withpen pencircle scaled 2 withcolor magenta; drawdot origin withpen pencircle scaled 4 withcolor red; \stopMPpage Output: Why is the outline of the green box visible in the yellow boxes? And how can I prevent this from happening?

2 1

Including a separate .mp file
by Gerben Wierda 15 Mar '20

15 Mar '20

I’d like to load a separate file with definitions. Something that contains % file: my definitions.mp \startMPdefinitions … my definitions ... \stopMPdefinitions How do I get this loaded in LuaTeX? How are files found if I want it somewhere in my personal text tree? G

2 1

Is it possible to use the macOS Optima font in ConTeXt/METAPOST?
by Gerben Wierda 15 Mar '20

15 Mar '20

Subject line says it all… Thanks in advance, G

2 1